Juice extractob



Jan. 9, 1940. FRQMM 2,186,672

JUICE EXTRACTUR Filed Sept. 9, 1938 2 Sheets-Sheet 1 Z6 gul Jan. 9, 1940. H. FROMM JUICE EXTRACTO!! Filed Sept. 9, 1958 2 Sheets-Sheet 2 jrrMmI/L,

INVENTOR ATTO R N EYS Patented Jan. 9, 1940 UNITED STATES PATENT OFFICE 7 Claims.

My invention relates to the extraction of fruit juices and includes among its objects and advantages the provision of an improved fruit Juice extractor.

An object of my invention is to provide a fruit juice extractor of the power operated type employing a reamer and an oscillating strainer operable about the axis of the reamer in which a novel ope-rating connection is provided between the source of power and the strainer. My invention makes use of an electric motor and a train of gears connecting the motor with the reamer. Within the gear train I interpose novel means operatively connected with the strainer for oscillating the same about the axis of rotation of the reamer. In addition, the present invention embodies a novel strainer designed to break fruit cells and solids in such manner as to completely extract the fruit juices therefrom. The extractor is so designed as to embody an exceedingly compact unit, in addition to comprising relatively few parts so designed as to permit the units to be manufactured at a relatively low cost. The present invention is designed with a view to kitchen use in the average home and embodies a relatively durable unit oi convenient weight and ornamental design.

In the accompanying drawings:

Figure 1 is a vertical sectional view of a fruit juice extractor embodying my invention;

Figure 2 is a top plan view of the oscillating mechanism for the strainer;

Figure 3 is enlarged sectional detail view of the operating mechanism for the strainer and 35 the reamer;

Figure 4 is a plan view of the gear mechamsm;

Figure 5 is a perspective view of the oscillating mechanism for the strainer;

Figure 6 is a top plan view of the strainer;

Fig. 'l is a sectional View along the line 1-1 of Figure 3; and

Figure 8 is an enlarged plan view of a portion of the strainer.

In the embodiment selected to illustrate my invention, I make use of an electric motor III enclosed within a housing I2 mounted on a base I4. Base I4 includes ears I6 to which I attach resilient pads I8 to prevent marring of table tops and the like. Motor I0 is anchored in the housing I2 through the medium of a bracket 2li which may be attached to the housing at different points through the medium of screws 22. On the upper end of the housing I2 I mount a cap 24 which carries a bowl 26, which bowl (Cl. 14E-3) includes an upstanding neck 28 having a bore 30. Cap 24 is provided with a iiange 32 which fits inside the annular recess 34 in the bottom 3B and neck part 28 of the bowl to restrain lateral shifting of the bowl. I

Motor III supports a gear box 38 through the medium of legs 40. In Figure 3, I illustrate the drive shaft 42 of the motor as extending through the oor 44 of the gear box and provided with a pinion 46 arranged in mesh with a larger l0 gear 48. Gear 48 includes a shaft 5|) journaled in the iioor 44 and a shaft 52 journaled in the cover 54 of the gear box. Cover 54 is made secure by screws 56 extending through the cover and threaded into the end wall 58 of the gear u box.

A cam 60 and a pinion 62 are formed integrally with the gear 48, while the gear 62 is arranged in mesh with a gear 54 connected with the reamer shaft es. Beamer shaft ss is rotatably 20 supported within an upstanding sleeve 68 formed integrally with the cover 54. Upon the sleeve 68, I rotatably mount a strainer sleeve 10 to the lower end of which are connected laterally extending arms 12 and 14. These arms ne within 25 a recess 'I6 in the cover plate 54. Strainer sleeve 10 is circular in cross section with the exception of the reach 12, which is square as illustrated in Figure 5.

Upon the square reach 12 I press the hub 14 30 of the strainer 16. Hub 14 includes a square opening for connection with the reach 12, so that the strainer 16 will be oscillated with the sleeve 1I) as a unit.

Oscillation of the sleeve 10 is accomplished 35 through the medium of arms 12 and 14. Arm 14 carries a downwardly extending shaft or pin 18 upon which I mount a bearing sleeve SII held in pressure relation with the periphery of the cam 60 through the medium of a spring 82. One 40 end of the spring 82 is attached to the arm 12 and the other end of the spring is anchored to the cover plate 54 as at 84. Referring to Figures 2 and 4, it will be noted that the cam Btl is eccentrically located with respect to the 45 axis of the pinion 62 so that rotation oi the pinion brings about rotation of the cam 60 for oscillating the arm 14. Such oscillatory movement of the arm 14 is transmitted to the strainer 16 through the medium of the sleeve 10. Figure 50 3 illustrates the arm 12 as having a downwardly projecting nger 86 to which the spring 82 is connected. I slot the cover plate 54 at 88 for accommodating the sleeved pin 18 and provide a slot 90 for accommodating the finger 86. 55

A cover plate 82 is positioned between the cap 24 and the cover plate |54. Plate 92 extends across the recess 90 for enclosing the arms 12 and 14 to prevent the escape of oil from the gear box 38. The box may be provided with a supply of hard oil at the time of assembly as a source of permanent lubricant for the gears in the box. A curved wall 84 extends transversely of the gear box 38 to confine the spring 82 in a separate compartment. Should the spring 82 break, the pieces of the spring are restrained from entering in and about the gear train, thus affording protection for the gears. Cap 24 is made secure by the screws`58 as at 96 in Figure 3. Screws 98 additionally secure the cover 54 in place. In Figure 3 I illustrate a cap |08 as being pressed on the sleeve 10 and arranged to extend about the flange ||l2 formed on the neck 32. Cap lill) acts as a guard against the entrance of moisture between the cap 24 and the sleeve 10.

To the upper end of the reamer shaft 6G. I connect a reamer key |06 shaped to be inserted in a correspondingly shaped socket |08 in the reamer bulb Ilil. Strainer i6 includes a conically shaped formation ||2 having a flange ||4 pinched between the flanges IIE of the strainer hub 14. The bottornof the strainer 16 is perforated as at |2|l while the peripheral margin of the strainer is bent upwardly to provide a flange |22. Flange |22 is provided with perforations |24 through which fruit juices may drain into the bowl 26. Fruit juices will, of course, additionally drain through the perforations |20.

While the hub 14 of the strainer is detachably connected with the reach 12, I slot the sleeve 1|| for the reception of the spring |24 which is shaped to bear against the hub 14 in the manner of Figure 1. Spring |24 prevents rattling of the strainer during reclprocation thereof. Reamer H0 is detachably connected with the element |06.

In Figures l and 8, I illustrate the manner in which the bottom ||B of the strainer is shaped. Adjacent each of the perforations |20 I strike up the bottom |I8 to provide sharp formation |26 which function to break the fruit cells and reduce the fruit pulp to such a degree as to remove ali the fruit juices therefrom. The strainer is reciproeated at a rapid rate so that the sharp formation |26 will effectively reduce all the solids. Fruit juices drained from the strainer 'i8 are delivered to the bowl 28, which bowl is shaped to provide a drain spout |28 projecting laterally of the motor housing I2. Cap 24 is depressed at |30 to provide accommodation for the spout |28.

Reamer H8, the strainer 18 and the bowl 2B are each detachably related so that these parts may be removed for cleaning purposes.

Base i4 includes a perforated top |32 for the inlet of air. Motor ||l includes a downwardly extending power shaft |84 to which I connect a fan |36. The fan moves air upwardly through the motor housing I2, while the cap 24 is provided with openings IBB for the outlet or air. A conventional switch |40 may be mounted on the cap 24 for connection with the motor circuit.

Because of the sharp formations |26, oscillation of the strainer 1B causes the fruit pulp to advance in the same general direction about the axis of the strainer. The formations |26 are sharp so as to effectively strike the fruit pulp for breaking the solids in addition to advancing the mass along the bottom of the strainer. Such advancement of the fruit pulp imparts an agitating action thereto so as to edectively bring all the solids into breaking relation with the formations |28. Agitation of the fruit pulp together with the advancement thereof facilitates drainage of the fruit juices into the bowl.

Beamer shaft B6 is provided with a longitudinal lubricating bore |42 closed at its upper end by a conventional spring pressed ball |44. A transverse bore |46 communicates with the bore |42 for delivering lubricant to the surface of the shaft.

Without further elaboratlo the foregoing will so fully illustrate my invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of service.

I claim:

l. A fruit juice extractor comprising a motor driven gear, a support having an opstanding sleeve, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end, a train of gears operatively connecting the motor driven gear with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer carried by said second sleeve for oscillation therewith below the reamer, arms connected with said second sleeve, a cam actuated by one gear in saidtrain of gears and operatively engaging one of said arms for oscillating said second sleeve, and resilient means cooperating with the other of said arms for biasing the said one of said arms against the cam.

2. A fruit juice `extractor comprising a motor driven gear, a support having an upstanding sleeve, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end. a train of gears operatively connecting the motor driven gear with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer carried by said second sleeve for oscillation therewith below the reamer, said support comprising a. relatively fixed horizontal plate having slots, arms connected with said second sleeve, one of said arms having an element extending through one of the slots in the plate, a cam actuated by one gear in said train of gears and operatively engaging said element for oscillating said second sleeve, the other of said arms having a nger extending through the other of said slots, and resilient means cooperating with said finger for biasing said element against the cam.

3. A fruit juice extractor comprising a housing provided with a motor, a relatively xed, upstanding sleeve, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end, a. train of gears operatively connecting the motor with said rotative shaft, a. second sleeve mounted for oscillation on said upstanding sleeve, a strainer carried by said second sleeve for oscillation therewith below the reamer, an operating connection between one gear in said train of gears and said second sleeve for oscillating the latter, a cap for said housing including an upstanding flange embracing said second sleeve, a bowl having a bottom arranged to rest on said cap with the bottom of the bowl provided with an upstanding neck surrounding said second sleeve, a sealing flange carried by said second sleeve inside said neck and partly overlying said flange to deflect fruit juices from said second sleeve. and a conically shaped formation in said strainer extending about said neck to deflect fruit juices from the upper margin of the neck and said second sleeve.

4. A fruit juice extractor comprising a motor, a housing for the motor, a gear box mounted on the motor and including a detachable cover plate, an upstanding sleeve carried by said cover plate, a rotative shaft extending through said upstandng sleeve and having a reamer mount at its upper end, a train of gears operatively connecting the motor with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer having a hub connected with said second sleeve for rotating the strainer therewith below the reamer, said cover plate being slotted, arms connected with said second sleeve and lying on said cover plate, one of said arms having an element extending through one slot in the cover plate, a cam actuated by one gear in said train of gears and operatively engaging said element for oscillating the sleeve, the other of said arms having a iinger extending through another 'slot in the cover plate, resilient means effective on said finger for biasing said element against the cam, a cap for said housing lying on said cover plate and including a flange embracing the lower margin of said second sleeve, and a ange carried by said second sleeve overlying said rst flange for deflecting fruit juices fromsaid lower margin of the second sleeve to seal the slots in said cover plate.

5. A fruit juice extractor comprising a motor, a housing for the motor, a gear box mounted on the motor and including a detachable cover plate, an opstanding sleeve carried by said cover plate, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end, a train of gears operatively connecting the motor with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer having a hub connected with said second sleeve for rotating the strainer therewith below the reamer, said cover plate being slotted, arms connected with said second sleeve and lying on said cover plate, one of said arms having an element extending through one slot in the cover plate, a cam actuated by one gear in said train of gears and operatively engaging said element for oscillating the sleeve, the other of said arms having a finger extending through another slot in the cover plate, resilient means eil'ective on said linger tor biasing said element against the cam, a cap for said housing lying on said cover plate and including a flange embracing the lower margin of said second sleeve, a iiange carried by said second sleeve overlying said rst flange for deiiecting fruit juices from said lower margin of the second sleeve to seal the slots in said cover plate, a bowl resting on said cap and having a conically shaped neck encircling said second sleeve above the iiange on the latter, and a conically shaped formation in the strainer iixedly connected with said hub and encircling the upper margin of said conically shaped neck to deiiect fruit Juices from the upper end of the neck.

6. A fruit juice extractor comprising a moto y a housing for the motor, a gear box mounted on the motor and including ay detachable cover plate, an upstanding sleeve carried by said cover plate, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end, a train of gears operatively connecting the motor with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer having a. hub connected with said second sleeve for rotating the strainer therewith below the reamer, said cover plate being slotted, arms connected with said second sleeve and lying on said cover plate, one of said arms having an element extending through one slot in the cover plate, a cam actuated by one gear in saidtrain of gears and operatively engaging said element for oscillating the sleeve, the other of said arms having a finger extending through another slot in the cover plate, resilient means effective on said linger for biasing said element against the cam, a cap for said housing `lying on said cover plate and including a flange embracing the lower margin of said second sleeve, a iiange carried by said second sleeve overlying said rst fiange for deflecting fruit juices from said lower margin of the second sleeve to seal the slots in said cover plate, a bowl resting on said cap and having a conically shaped neck encircling said second sleeve above the ange on the latter, and a conically shaped formation in the strainer iixedly connected with said hub and encircling the upper margin of said conically shaped neck to deflect fruit juices from the upper end of the neck, said conically shaped formation inthe strainer having an annular ange pinched between flanges on said hub to provide a liquid-tight connection.

'7. A fruit juice extractor comprising a motor, a housing for the motor, a gear box mounted on the motor and including a detachable cover plate, an upstanding sleeve carried by said cover plate, a rotative shaft extending through said upstanding sleeve and having a reamer mount at its upper end, a train of gears operatively connecting the motor with said rotative shaft, a second sleeve mounted for oscillation on said upstanding sleeve, a strainer having a hub connected with said second sleeve for rotating the strainer therewith below the reamer, said cover plate being slotted, arms connected with said second sleeve and lying on said cover plate, one of said arms having an element extending through one slot in the cover plate, a cam actuated by one gear in said train of gears and operatively engaging said element for oscillating the sleeve, the other of said arms having a linger extending through another slot in the cover plate, resilient means eil'ective on said linger for biasing said element against the cam, a cap for said housing lying on said cover plate and including a ange embracing the lower margin of said second sleeve, a flange carried by said second sleeve overlying said iirst flange for deflecting fruit Juices from said lower margin of the second sleeve to seal the slots in said cover plate, said cover plate being recessed to house said arms, a closure plate lying on said cover plate and extending across the recess in the cover plate, and means for xedly connecting the cap and said closure plate with said gear box.

HERBERT FROMM. 

